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Dec. 3l, 1946.
A. FREUNDLICH
LOOSE-LEAF BINDER
Filed Sept. 28, 1943
2 Sheets-Sheet 1
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INVENTOR
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ATI'ORN EYS
Dec. 31, 1946.
A. FREUNDLICH
2,413,616
LOOSE-LEAF BINDER
Filed Sept. 28, 1943
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2 Sheets-Sheet 2
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INVENTOR
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2,413,616
Patented Dec. 31, 1946
UNITED STATES' PATENT GFFICE A
2,413,616
LOOSE-LEAF BINDER
Albert Freundlich, kNew York, N. Y., assignor to
Spiral Binding Company, Inc., New York, N. Y.,
a corporation of New York
Application September 28, 1943, Serial No. 504,093
3 Claims. ` (Cl. 12B-24)
2
1
tions 6 of the ñller rings 2. The strips 3 and 4
are maintained in this position by means of the
spaced rivet members 1 which extend longitudi
nally of the binder in spaced relation and which
permanently secure the base member to the back
ing 8 of the book 9.
This invention relates to loose-leaf binders and
has for its principal object the provision of a sim
ple and inexpensive binder construction for se
curing together a book of sheets.
Other objects of the invention, as well as the
novel features of construction of this improved
The filler rings 2 are each formed from a single
binder will become apparent after a perusal of
the following description, read in connection With
piece of suitable plastic material which has been
bent to provide the two oppositely disposed legs
the accompanying drawings, in which Fig. 1 is a
perspective view'of an open book embodying the 10 6, the ñller retaining loop I0 and the hook-like
portion II provided at the outer end of the-loop
invention; Fig. 2 is a sectional view taken along
Ill. As is shown more clearly in Fig. 3 of the
the line 2-2 of Fig, 1; Fig. 3 is a top plan view
of the central portion of the book with the sheets v drawings, the legs 6 of each ñller ring 2 are pref
erably inclined relative to each other so that when
removed and the ring members unlatched; Fig. 4
is an end elevational View of the parts shown in 15 the ñller ring 2 is opened they are placed under
tension through their engagement with the side
Fig. 3; Fig. 5 is a plan view of one side.of the
edges of the strips 3 and 4, thereby tending to
binder base member before it is assembled in the
book; Fig. 6 is an end view of the base member
snap the ñller ring to a .closed position as the lat
parallelly arranged, spaced strips 3 and 4 which
provided in the fabric-covered projecting portion
ter is closed again. The base of the retaining
shown in Fig. 5 and Fig. 7 is a view similar to Fig.
5 but showing the other side of the base member. 20 loops I0 of the ring members 2 extend out through
apertures I4 provided in the fabric backing 5
In the drawings, the reference numeral I des
intermediate the strips 3 and 4 at spaced inter
ignates generally the base member of the vloose
vals (note Figs. 5 and 7). In the closed position
leaf binder to which the filler rings 2 are movably
of the ring members 2, the hook-like portions
connected. As is shown more clearly in Figs.
5 to 7, the base member I is composed of two 25 thereof are adapted to interengage with slots I2
may be made of any suitable material, but are
preferably made of an inexpensive material such
as cardboard. The strip 4 is wider than the strip
3 so that when the strip 4 is superimposed on the 30
of the strip 4. The slots I2 each include an en-~
larged portion to readily receive the hooked end
II of a binder ring and a narrow longitudinally
extending portion I3 adapted to cooperate with
the hooks I I to lock the ring members 2 in closed
strip /3 in the assembled condition of the parts
position. It will be noted that the enlarged por
the outer edge portion of the strip 4 projects be
tions of the slots I2 are offset with respect to the
yond the outer edge of the strip 3, as is shown
openings I4, while the narrow slot-like extensions
more clearly in Figs. 2 and 4 of the drawings.
The two spaced strips 3 and 4 are connected to 35 I3 thereof extend longitudinally of the binder
until their closed ends are in substantial registry
gether by a strip 5 of ñexible material such as,
with the apertures I4. It Will thus be evident
fabric, which, as is shown more clearly in Figs.
that in securing the hooked ends II of the ring
5 and 6 of the drawings, has one longitudinal
members 2 to the base member I the hooked ends
edge adjacent to the outer edge of the cardboard
strip 3, spans the space between the strips 3 and 40 are first bent sideways to enable them to readily
enter into the enlarged portions of the slots I2
4 and extends around the outer edge of the card
and then are slid along to the ends of the nar
board strip 4 to terminate along a line extending
row slot portions I3, the inherent resiliency of
substantially midway of the width of the strip 4.
the ring members 2 aiding in this operation.
The overlying portion 5’ of the fabric strip 5 is
adhered to the covered top surfaces of the strips 45 Thus when the hooks II are beneath the pro
jecting portion of the strip 4 and in engagement
3 and 4 while the turned-in underlying portion
with the slots I3, such hooked portions will be
5” of such strip is adhered to the outer under
automatically locked in position until positively
surface portion of the strip 4. The spacing be
removed therefrom.
tween the strips 3 and 4 is such that when the
strip 4 ove'rlìes the strip 3 with their inner edges 50 It is believed that the operation of the device
is self-evident, it being only necessary to disen
in alignment or'ñush, as is shown in Fig. 4, the
gage the ñller rings 2 from the base I by forcing
portion of the fabric 5 intermediate such strips
them out of the narrow slot portions I3 towards
3 and 4 will form together with the inner edges
or sides of the strips 3 and 4, a substantially
tubular housing adapted to receive the leg por
enlarged portions of the slots I2, then withdraw
55 ing them from such enlarged slot portions I2
2,413,616
and swinging them outwardly about their legs 6
portion so that the other longitudinal edge of the
latter projects beyond said under portion, a cov
to bring them into a position where sheets can
ering of flexible material extending over the up
readily be removed from or added to such ring
per surfaces of said base member and around the
members. The rings can thereupon be brought
longitudinal edges thereof to the under surfaces
into locked position on the base member in the $1 thereof„said covering material being adhered to
manner previously described. While the ring
the upper surface of said upper portion, to the
members are each made of separate pieces of ma
under surface of said under portion, to the un
terial, it is obvious that they may be made from
der surface of the projecting part of said upper
a single piece of material so that the portions
portion and along the longitudinal edge of said
connecting each ring member Will be positioned 10 -base formed by the edges of the lower and upper
in the tubular portion -formed by the inner edges
portions thereof, being spaced from the latter and
of the strips 3 and 4 and the portion of the back
spanning the distance between the upper surface
ing material 5 joining the two strips.
of said upper portion and the lower surface of said
While I have illustrated and described a pre
under portion to provide an elongated opening de
ferred embodiment of the invention, it will be evi 15 fined by the flush longitudinal edges of said upper
dent to those skilled in the art that various
and under portions and said portion of the ilex
changes and modifications may be made therein
ible material spanning said edges, a filler carry
without departing from the spirit of the inven
ing member movably connected to said base mem
.tion or the scope of the appended claims,
ber and being provided with a filler retaining
20
loop and leg portions extending longitudinally of
I claim:
l. A loose-leaf binder comprising a back and
the base member and positioned within said elon
covers, an elongated, flat base member secured
gated opening alongside the longitudinal edge
to said back, a covering of flexible material ex
thereof, said edge spanning portion of the flexible
tending over the upper surfaces of said base
material being provided with an aperture through
member and -around the longitudinal edges there 25 which the base portion of .the loop extends, lock
of to the under surfaces thereof, said covering
ing means on the outer end of said retaining loop
material being adhered to the upper and under
and on the projecting longitudinal edge of the
surfaces of said base and along one longitudinal
upper portion for locking the loop in closed po
edge thereof being spaced from the latter and
sition, the flexible and base material of said pro
spanning the distance between the upper and 30 jecting edge being cut out inwardly of said base
lower surfaces of said base to provide an elon
locking means .to enable said loop-locking means
gated opening deñned by such longitudinal edge
to be placed in interlocking engagement with
and said portion of the flexible material spanning
the base locking means.
r
'
said edge, a filler carrying member provided with
3. A loose-leaf binder comprising a back and
a filler retaining loop and leg portions extending 35 covers, a flat relatively rigid base secured to said
longitudinally of the base member and positioned
back, a flexible covering around said base, means
in said elongated opening alongside said longitu
adhesively securing said flexible covering to the
dinal edge, said edge spanning portion of the flex
upper and under surfaces of said base, said ilex
ible material being provided with an aperture
ible covering along one longitudinal edge of said
40
through which the base portion of the loop eX
base being spaced from the latter and spanning
tends, locking means provided on the outer end
the distance between the upper and lower sur-l
of said retaining loop and locking means provided
faces of said base to provide an elongated open
on .the other longitudinal edge of said base mem
ing defined by such longitudinal edge and said4
ber intermediate the top and bottom surfaces 45 portion of the flexible material spanning said
thereof and cooperative with said-loop locking
edge, a ñller carrying member movably connected
means to lock the loop in closed position, said
to said base member and being provided with a
flexible material and said base member lbeing out
filler retaining loop and leg portions extending
out inwardly of said base locking means to en
longitudinally of the base member and positioned
within said elongated opening alongside said lon
terlocking engagement with the ‘base locking 50 gitudinal edge, said edge spanning portion of the
means.
flexible material being provided with an aperture
2. A loose-leaf binder comprising a back and
through which extends the base portionsof said
coversy an elongated, fiat base member secured
loop, and cooperating locking means provided on
to said back and composed of an upper portion
55 the outer free edge of said retaining loop and on
said
member
and
an
under
lforming the top of
the other longitudinal edge of said base member
.portion substantially flush along one side with a
for locking the loop in closed position.
longitudinal edge of said upper portion and hav
ALBERT FREUNDLICH.
- able said loop locking means to be placed in in
ing a surface area less than that of the upperv
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